Re: [OWLAPI-developer] Implememting OWLObjectVisitor class

[Nick D. <nic...@cs...>]

If you implement the visit method for the constructs you are checking you
can just put in a conditional that sets a flag or throws an exception.You
might find isAnonymous() useful for determining whether an OWLDescription is
a simple named class or not.

Nick

On Tue, Jun 17, 2008 at 7:47 PM, Reul, Q. H. <q....@ab...> wrote:

> Hi,
>
> I have started developing a class implementing the
> org.semanticweb.owl.model.OWLObjectVisitor. I have created several visitors
> to deal with OWLSubClassAxiom and OWLEquivalentClassesAxiom.
>
> public void visit(OWLSubClassAxiom axiom) {
>  axiom.getSubClass().accept(this);
>  axiom.getSuperClass().accept(this);
> }
>
> public void visit(OWLEquivalentClassesAxiom axiom) {
>  for (OWLDescription desc : axiom.getDescriptions()) {
>    desc.accept(this);
>  }
> }
>
> I have started to write the method to visit OWLObjectIntersectionOf and
> OWLObjectSomeRestriction description. I need to check that these don't
> contain any complex description (i.e. UnionOf, IntersectionOf, etc.). Some
> of these construct are not allowed within the language I'm using (EL+). I
> would like to throw an exception or record the axiom holding disallowed
> construct.
>
> Can anyone help? Is there a way to know which visitor is being called?
>
> Cheers,
>
> Quentin
>
> ******************************************
> * Quentin H. Reul                        *
> * PhD Research Student                   *
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